Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Reexamination Certificate
2005-04-12
2005-04-12
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
Reexamination Certificate
active
06878956
ABSTRACT:
A surface inspection apparatus inputs image data obtained by scanning an inspection object by a camera which includes a line image sensor into calculation means. The surface inspection apparatus comprises a line memory and adder to add image data of two adjacent main scanning lines to generate an image data string, adds the image data in a block including a plurality of pixels continuous in a main scanning direction by the calculation processor to generate added data in the block, calculates a correlated value of the added data in the blocks adjacent to each other in the main scanning direction, and judges the correlated value with a threshold value by judgment means to obtain a surface state of the inspection object.
REFERENCES:
patent: 5230027 (1993-07-01), Kikuchi
patent: 9-304286 (1997-11-01), None
patent: 2001-4552 (2001-01-01), None
patent: 2001-10024 (2001-01-01), None
patent: 2001-143079 (2001-05-01), None
Luu Thanh X.
Ohlandt Greeley Ruggiero & Perle L.L.P.
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